Concrete Bridge Deck Calculator (USA)
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Concrete Bridge Deck
Calculator USA — Volume, Rebar & Cost
Instantly calculate concrete volume in cubic yards, rebar weight, and 2025 construction cost for reinforced concrete bridge deck slabs — per AASHTO LRFD 9th Edition, ACI 318-19, and FHWA specifications. Supports cast-in-place, stay-in-place formwork, and overlay decks.
7 in
Min Deck Thickness — AASHTO S9.7.1.1
4 ksi
Min Concrete f’c — AASHTO S5.4.2.1
2.5 in
Min Top Cover — Deicing Salt Exposure
60 ksi
Rebar Yield Strength fy — ASTM A615/A706
🌉 Highway Bridge Deck
🛤️ Railroad Bridge Deck
🏙️ Overpass / Flyover
🔧 Deck Overlay / Rehabilitation
🏗️ SIP Form Deck
🚶 Pedestrian Bridge Deck
The concrete bridge deck calculator for the USA estimates the concrete volume in cubic yards, transverse and longitudinal rebar weight, and total deck construction cost for reinforced concrete bridge decks on residential, commercial, and highway bridge projects. Bridge deck slabs in the USA are designed per the AASHTO LRFD Bridge Design Specifications 9th Edition, ACI 318-19, and FHWA concrete bridge deck technical resources. Minimum deck thickness is 7.0 inches per AASHTO S9.7.1.1; minimum concrete strength is f’c = 4.0 ksi (4,000 psi) per AASHTO S5.4.2.1. This calculator handles deck volume, wearing surface, rebar cage, and regional 2025 cost estimates automatically.
🌉 Concrete Bridge Deck Calculator — USA
Enter bridge deck geometry and specifications to calculate concrete volume (yd³), rebar weight (lbs/tons), and estimated 2025 construction cost per AASHTO LRFD and ACI 318-19.
Total span length along the bridge centerline
Out-to-out width including barriers/parapets
AASHTO minimum: 7 in · Typical: 8–10 in · TxDOT/Caltrans: 8–10.375 in
Concrete fill between deck soffit and top flange of girder
For multi-span bridges, deck length × spans = total deck
AASHTO requires AE (air-entrained) concrete for decks exposed to deicers
Total Concrete Volume — Bridge Deck
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Cubic yards · AASHTO LRFD / ACI 318-19
📦 Volume & Rebar Summary
💲 USA Cost Estimate (2025)
📐 Concrete Bridge Deck — Typical USA Cross-Section (AASHTO LRFD)
Future Wearing Surface / HMA Overlay — 2 in (DW Load)
Top Transverse Rebar — #5 @ 9 in (2.5 in Cover) · Top Distribution Bars
Cast-in-Place Reinforced Concrete Deck Slab
f’c ≥ 4.0 ksi · AE Concrete (Deicers) · AASHTO S9.7.1.1 — Min. 7 in
Bottom Transverse Rebar — #5 @ 9 in (1.0 in Cover) · Bottom Distribution Bars
Haunch / Fillet — Concrete Fill Over Top Flange of Girder (1.5–3 in typical)
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Girder 1
I-Beam / Box
S
Girder 2
I-Beam / Box
S
Girder 3
I-Beam / Box
—
Substructure — Pier Cap / Abutment Bearing Seat
7 in
AASHTO min. deck thickness (S9.7.1.1)
150
Concrete unit wt. pcf (AASHTO Table 3.5.1-1)
4–15 ft
Girder spacing range (AASHTO Art. 4.6.2)
Wearing Surface
Top / Bottom Rebar
CIP Concrete Deck
Steel / Concrete Girder
What Is a Concrete Bridge Deck & How Is It Designed in the USA?
A concrete bridge deck is the top structural slab of a highway or railroad bridge — the surface that directly carries vehicle wheel loads, distributes them to the supporting girders or stringers, and protects the superstructure from weather and deicing chemicals. In the USA, the vast majority of bridge decks are cast-in-place reinforced concrete slabs, though precast full-depth panels and post-tensioned deck systems are used on major projects. Bridge decks are designed per the AASHTO LRFD Bridge Design Specifications 9th Edition, using the Equivalent Strip Method (AASHTO Article 4.6.2.1) for transverse deck design and FHWA concrete bridge deck guidelines for material specifications and durability requirements.
Concrete bridge decks are one of the most maintenance-intensive elements of the US bridge inventory. The FHWA National Bridge Inventory (NBI) reports that approximately 7.5% of US bridges are structurally deficient — with deteriorated bridge decks being the leading cause of deficiency ratings. Deck deterioration is primarily caused by chloride ion penetration from deicing salts, freeze-thaw damage, and insufficient concrete cover over reinforcement. This is why AASHTO requires air-entrained (AE) concrete for all bridge decks exposed to deicing chemicals in the USA, with minimum f’c = 4.0 ksi and top cover of at least 2.5 inches.
🔵 AASHTO LRFD Bridge Deck Design — Key Requirements for USA Projects
Per AASHTO LRFD 9th Edition: Minimum deck thickness = 7.0 inches (S9.7.1.1); Minimum f’c = 4.0 ksi for bridge decks (S5.4.2.1); Top cover = 2.5 inches for decks exposed to deicers, 2.0 inches for non-deicing environments (STable 5.12.3-1); Bottom cover = 1.0 inch minimum (STable 5.12.3-1); fy = 60 ksi (Grade 60 ASTM A615 or A706); Temperature and shrinkage steel maximum spacing = smaller of 3× deck thickness or 18 inches (S5.10.8.2).
📏 Deck Thickness — AASHTO S9.7.1.1
AASHTO LRFD requires a minimum concrete deck thickness of 7.0 inches for bridge decks, excluding any provision for grinding, grooving, or sacrificial wearing surface. Typical US state DOT practice calls for 8.0–9.0 inches for standard highway bridges on 8–12 ft girder spacings. TxDOT specifies 8 in; Caltrans specifies 7–10.375 in depending on girder type. Deck thickness less than 1/20 of the design span requires consideration of prestressing to control cracking.
🧪 Concrete Mix — AE Concrete Required
AASHTO S5.4.2.1 requires all bridge deck concrete exposed to deicing chemicals in the USA to be air-entrained (AE) concrete with 6–7.5% air content per ASTM C231. AE concrete achieves the same minimum f’c = 4.0 ksi with improved freeze-thaw resistance. Many state DOTs now specify High Performance Concrete (HPC) with f’c = 5,000–6,000 psi, w/cm ≤ 0.40, and supplementary cementitious materials (fly ash, slag, silica fume) to reduce permeability and extend deck life beyond 75 years.
🔩 Rebar — Transverse Primary + Distribution Steel
Bridge deck reinforcement in the USA consists of transverse bars (primary reinforcement perpendicular to traffic) and longitudinal distribution bars (parallel to traffic). Transverse bars are typically #5 at 9 inches top and bottom for standard highway decks per AASHTO Table A4-1. Many US DOTs now specify epoxy-coated or MMFX (stainless-clad) rebar for decks exposed to deicing salts, significantly extending service life despite higher initial cost.
How to Calculate Bridge Deck Concrete Volume — USA Formula
Calculating concrete for a bridge deck involves computing the main slab volume, adding haunch/fillet volume over each girder, and converting to cubic yards for ordering. A standard 5% overage factor is applied for waste, forming losses, and minor geometric variations. The wearing surface (HMA or concrete overlay) is a separate material calculated independently.
📐 Bridge Deck Concrete Volume Formulas (AASHTO LRFD / FHWA — USA)
Deck Volume (ft³) = Length (ft) × Width (ft) × Thickness (ft) [thickness: in ÷ 12]
Haunch Volume (ft³) ≈ Length × Num_Girders × Flange_Width × Haunch_Depth / 144 [simplified]
Net Concrete Volume (ft³) = Deck Volume + Haunch Volume
Volume (yd³) = Net Volume (ft³) ÷ 27
Total Order (yd³) = Volume (yd³) × 1.05 [5% waste/overage]
Deck Area (ft²) = Length × Width [for rebar and wearing surface estimates]
Rebar Weight (lbs) ≈ Deck Area × rebar_density (lbs/ft² from bar size + spacing)
Example: 120 ft × 44 ft × 8 in deck → 3,520 ft³ = 130.4 yd³ × 1.05 = 136.9 yd³
⚠️ Bridge Deck Concrete Must Be Ordered with 5–10% Overage
Bridge deck concrete placement involves significant volume uncertainty due to deck camber (prestressed girders bow upward, consuming extra concrete to achieve flat deck profile), formwork deflection under wet concrete weight, and deck surface finishing requirements. FHWA and most state DOT specifications require a 5% minimum overage on concrete orders for bridge decks. On large bridge projects, the camber effect alone on prestressed girder bridges can increase concrete volume 8–15% above theoretical calculations — this must be accounted for in quantity estimates and contract pay item calculations.
Bridge Deck Concrete Volume Reference Table — USA Standard Sizes
The following table shows pre-calculated concrete volumes for typical US highway bridge deck configurations using an 8-inch deck thickness, 1.5-inch haunch, and 5% overage factor — consistent with standard AASHTO LRFD and state DOT practice.
| Bridge Type | Length × Width | Deck Thick | Net Volume | Ordered (5% OP) | Est. Cost (Midwest) |
|---|---|---|---|---|---|
| Rural Road Bridge | 60 × 32 ft | 8 in | 47.4 yd³ | 49.7 yd³ | $74,600–$124,300 |
| 2-Lane Highway Bridge | 120 × 44 ft | 8 in | 130.4 yd³ | 136.9 yd³ | $205,400–$342,300 |
| 4-Lane Overpass | 200 × 66 ft | 8.5 in | 326.7 yd³ | 343.0 yd³ | $514,500–$857,500 |
| Interstate Bridge | 300 × 80 ft | 9 in | 666.7 yd³ | 700.0 yd³ | $1,050,000–$1,750,000 |
| Pedestrian Bridge | 80 × 14 ft | 7 in | 24.2 yd³ | 25.4 yd³ | $38,100–$63,500 |
| Railroad Bridge Deck | 100 × 22 ft | 10 in | 67.9 yd³ | 71.3 yd³ | $107,000–$178,300 |
| Box Girder Bridge | 250 × 60 ft | 8 in | 370.4 yd³ | 388.9 yd³ | $583,400–$972,300 |
| Multi-Span (3×) Overpass | 360 × 55 ft | 8.5 in | 618.3 yd³ | 649.2 yd³ | PE + DOT Approved |
Rural Road Bridge (60×32 ft, 8 in)
Net Volume47.4 yd³
Ordered (5% OP)49.7 yd³
Est. Cost (Midwest)$74,600–$124,300
2-Lane Highway Bridge (120×44 ft, 8 in)
Net Volume130.4 yd³
Ordered (5% OP)136.9 yd³
Est. Cost (Midwest)$205,400–$342,300
4-Lane Overpass (200×66 ft, 8.5 in)
Net Volume326.7 yd³
Ordered (5% OP)343.0 yd³
Est. Cost (Midwest)$514,500–$857,500
Interstate Bridge (300×80 ft, 9 in)
Net Volume666.7 yd³
Ordered (5% OP)700.0 yd³
Est. Cost (Midwest)$1,050,000–$1,750,000
Pedestrian Bridge (80×14 ft, 7 in)
Net Volume24.2 yd³
Ordered (5% OP)25.4 yd³
Est. Cost (Midwest)$38,100–$63,500
Box Girder Bridge (250×60 ft, 8 in)
Net Volume370.4 yd³
Ordered (5% OP)388.9 yd³
Est. Cost (Midwest)$583,400–$972,300
Bridge Deck Types Used in USA Construction
The USA uses several bridge deck systems depending on girder type, span length, traffic volume, and durability requirements. Here are the most common deck types encountered on US highway, bridge, and infrastructure projects.
🏗️
Cast-in-Place on Removable Forms (CIP)
The most common US bridge deck type — fresh concrete is placed on temporary plywood or metal forms spanning between girder flanges. Provides maximum quality control and is suited to all girder types and span geometries. Forms are stripped after concrete reaches 70% of design strength per AASHTO and ACI 318-19. Standard practice for all new US highway bridge construction.
🔧
Stay-in-Place (SIP) Steel Form Deck
Corrugated steel form panels are placed between girder flanges and remain permanently in the deck — eliminating formwork removal. SIP forms save labor and schedule time but do not contribute to structural section capacity. Widely used on US highway and bridge projects since the 1970s. AASHTO S9.7.4 governs SIP steel form deck design and minimum concrete cover requirements (2.5 in above SIP top corrugation).
🔩
Precast Full-Depth Deck Panels
Factory-cast full-depth reinforced or post-tensioned concrete deck panels are trucked to site and erected on girder flanges, eliminating field concrete forming entirely. Dramatically faster construction — used on accelerated bridge construction (ABC) projects in the USA. Panels are connected with longitudinal closure pours. Grouted shear pockets provide composite connection to steel girders.
🔄
Concrete Deck Overlay / Rehabilitation
Existing deteriorated bridge deck surfaces are overlaid with Latex Modified Concrete (LMC), Low-Slump Dense Concrete (LSDC), or polymer-modified overlays to restore deck surface condition and corrosion protection without full deck replacement. Overlay thickness typically 1.5–2.5 inches. Most US state DOT bridge maintenance programs use overlays as the primary deck rehabilitation strategy.
🌉
Empirical Deck Design (AASHTO Art. 9.7.2)
AASHTO LRFD permits an empirical design method for concrete bridge decks with girder spacing 6–18 ft, deck depth 7–18 in, and effective length/depth ratio ≤ 18. The empirical method uses a standardized minimum reinforcement grid (0.27 in²/ft each direction, both faces) without explicit moment calculation — simplifying design for standard US highway bridge decks. Widely used by US state DOTs for routine bridge projects.
⚡
High Performance Concrete (HPC) Deck
HPC bridge decks with f’c = 5,000–10,000 psi, w/cm ≤ 0.40, and silica fume or slag supplementary cementitious materials (SCM) achieve dramatically lower permeability and longer service life (75–100 year design life) compared to conventional 4,000 psi decks. Specified by FHWA, NYSDOT, PennDOT, and VDOT on major bridge projects. Higher initial cost is offset by reduced maintenance and rehabilitation over the bridge service life.
Bridge Deck Concrete Best Practices — USA Projects
Concrete bridge deck construction quality directly determines long-term bridge deck life and maintenance costs. Deck placement errors that lead to premature deterioration are extremely costly to remediate — deck replacement costs $150–$500 per square foot in the USA. Here are critical best practices from FHWA and AASHTO for bridge deck concrete placement.
✅ Control Concrete Temperature During Placement — Critical for Deck Durability
Bridge deck concrete placement temperature must be carefully controlled — AASHTO and most US state DOT specifications limit concrete temperature at placement to 50°F minimum and 90°F maximum. High temperature placement accelerates early hydration, increases cracking risk, and reduces long-term deck durability. Low temperature placement causes freezing damage. FHWA recommends starting deck pours in the early morning in hot weather to minimize temperature-induced cracking — the leading cause of premature bridge deck deterioration in the USA.
- Use a deck placement plan (concrete placement sequence) — bridge deck concrete must be placed in a specific sequence to minimize differential deflection and cracking between positive and negative moment zones. FHWA and AASHTO require a concrete placement sequence plan on all multi-span composite bridges. Always start placement in the positive moment zone (midspan) and work toward the negative moment zones (over piers) to minimize transverse cracking at pier locations.
- Specify epoxy-coated or MMFX rebar in all deicing zones — uncoated black steel rebar in bridge decks exposed to road salt deteriorates in as little as 10–15 years in the northern USA. FHWA and most northern state DOTs now mandate epoxy-coated ASTM A775, galvanized ASTM A767, or stainless steel (ASTM A1035 MMFX) rebar as the minimum for new bridge deck construction in frost/deicing zones.
- Cure bridge deck concrete for a minimum of 7 days — AASHTO S5.12.5 and most US DOT specifications require continuous wet curing of bridge deck concrete for a minimum of 7 days after placement using wet burlap covered with polyethylene sheeting. Inadequate curing is the single most common cause of premature bridge deck cracking in the USA. Longer curing (14 days) produces 15–20% higher 28-day strength and dramatically lower permeability.
- Test fresh and hardened concrete per AASHTO / ASTM requirements — each truck load should be tested for slump (ASTM C143), air content (ASTM C231), temperature, and unit weight. Minimum one set of strength cylinders (ASTM C39) per 50 cubic yards of deck concrete placed. Bridge deck concrete that fails air content or slump requirements must be rejected — do not add water at the truck.
- Plan for construction traffic and formwork loading carefully — bridge deck formwork must be designed for the full wet concrete weight (150 pcf × deck thickness), plus construction live load (50 psf minimum per OSHA) and equipment loads. Inadequate formwork is a major cause of catastrophic bridge deck failures during construction in the USA. All formwork designs for concrete depths exceeding 6 feet or spans exceeding 14 feet must be designed by a licensed PE per OSHA 1926.703.
- Account for girder camber when calculating concrete volumes — prestressed concrete and steel girders are fabricated with upward camber to partially offset dead load deflection. When fresh concrete is placed on a cambered girder, the actual deck thickness is greater than specified at midspan — resulting in 8–15% more concrete volume than theoretical calculations on long-span prestressed bridges. Camber data from the girder shop drawings must be incorporated into concrete quantity estimates for accurate takeoffs.
🚨 Most Common Bridge Deck Concrete Defects — USA Construction
The most costly bridge deck construction defects in the USA are: (1) Transverse cracking over negative moment zones — caused by improper placement sequence, high early concrete temperature, or inadequate curing; (2) Delamination — concrete layer separation caused by corrosion of rebar near the top surface, insufficient cover, or poor consolidation; (3) Low cover to reinforcement — rebar chairs at incorrect height allow bars to settle during vibration, reducing cover below AASHTO minimums; (4) Insufficient air content — air-entrained concrete that loses air during transport or placement fails freeze-thaw durability requirements. All are preventable with proper QC/QA procedures per FHWA Bridge Inspector’s Reference Manual.
Frequently Asked Questions — Concrete Bridge Deck Calculator USA
What is the minimum thickness for a concrete bridge deck in the USA?+
Per AASHTO LRFD S9.7.1.1, the minimum thickness for a concrete bridge deck in the USA is 7.0 inches, excluding any provision for grinding, grooving, or sacrificial wearing surface. However, most US state DOTs specify greater minimum thickness in practice: TxDOT requires 8.0 inches; Caltrans requires 7.0–10.375 inches depending on girder type; PennDOT and NYSDOT typically specify 8.5–9.0 inches. Thinner decks (less than 7 in) are only permitted with bridge owner approval. Deck thickness less than 1/20 of the design span requires consideration of prestressing in the span direction to control cracking per AASHTO S9.7.1.1.
What concrete strength is required for bridge decks in the USA?+
Per AASHTO LRFD S5.4.2.1, the minimum concrete compressive strength for bridge decks in the USA is f’c = 4.0 ksi (4,000 psi). For decks exposed to deicing salts or in freeze-thaw zones, AASHTO requires air-entrained (AE) concrete with 6–7.5% air content and maximum w/cm = 0.45. Most state DOTs now specify higher performance:
- TxDOT: f’c = 4,000 psi Class S concrete
- NYSDOT: f’c = 4,000 psi AE + silica fume (Class HP)
- PennDOT: f’c = 4,000 psi Class AAA concrete
- Caltrans: f’c = 3,600 psi minimum (Class 4000)
- FHWA HPC: f’c = 5,000–10,000 psi for major structures
Many US DOTs specify HPC (High Performance Concrete) with supplementary cementitious materials to achieve permeability-limited concrete for 75–100-year deck design life.
How much concrete does a bridge deck need per square foot?+
Bridge deck concrete quantity per square foot depends directly on deck thickness. Quick reference for USA standard deck thicknesses:
- 7 inch deck: 0.0216 yd³/ft² (0.583 ft³/ft²)
- 8 inch deck: 0.0247 yd³/ft² (0.667 ft³/ft²)
- 8.5 inch deck: 0.0262 yd³/ft² (0.708 ft³/ft²)
- 9 inch deck: 0.0278 yd³/ft² (0.750 ft³/ft²)
- 10 inch deck: 0.0309 yd³/ft² (0.833 ft³/ft²)
Add 5–10% for haunch/fillet volume and overage. For a typical 44 ft wide × 120 ft long bridge deck at 8 in: 5,280 ft² × 0.0247 = 130.4 yd³ + 5% = 136.9 yd³ total order.
What rebar is typically used in bridge decks in the USA?+
Standard US bridge deck reinforcement per AASHTO LRFD:
- Primary transverse reinforcement: #5 bars at 9 inch spacing top and bottom (standard per AASHTO Table A4-1 for most girder spacings)
- Longitudinal distribution bars: Percentage of transverse steel per AASHTO S9.7.3.2 formula (67%/√S for S ≤ 15 ft, where S = girder spacing in ft)
- Temperature & shrinkage steel: Both directions, maximum 3× deck thickness or 18 inches spacing per AASHTO S5.10.8.2
- Rebar specification: ASTM A615 Grade 60 (uncoated), ASTM A775 (epoxy-coated), ASTM A767 (galvanized), or ASTM A1035 (MMFX stainless-clad)
- Cover — deicing zone: 2.5 inches top, 1.0 inch bottom per AASHTO STable 5.12.3-1
How much does a concrete bridge deck cost in the USA in 2025?+
Bridge deck construction cost in the USA varies significantly by project size, region, and deck type. Typical 2025 cost ranges (installed, including concrete, rebar, forms, and finishing):
- Cast-in-place deck: $150–$350 per square foot
- SIP form deck: $130–$280 per square foot (saves formwork labor)
- Precast full-depth panels: $200–$450 per square foot (faster construction)
- Overlay rehabilitation: $30–$80 per square foot (LMC, LSDC)
- Full deck replacement: $200–$600 per square foot (mobilization intensive)
Cost is higher in the Pacific Coast and Northeast (20–40% above Midwest). HPC bridge deck concrete typically costs $180–$250 per cubic yard installed vs $140–$200 for standard 4,000 psi AE concrete.
What is AASHTO Equivalent Strip Method for bridge deck design?+
The AASHTO LRFD Equivalent Strip Method (ESM) is the primary method for designing reinforced concrete bridge deck slabs in the USA — defined in AASHTO Article 4.6.2.1. The method treats a 1-foot-wide transverse strip of the deck as an equivalent beam spanning between girders, with:
- Strip width W = 26 + 6.6S (positive moment) or 48 + 3.0S (negative moment), where S = girder spacing in feet
- Live load moments from AASHTO Table A4-1 (precomputed for HL-93 truck loading)
- Dead load moments from self-weight of deck slab and wearing surface
- LRFD strength combinations per AASHTO Table 3.4.1-1
The Empirical Method (AASHTO Art. 9.7.2) is a simplified alternative for standard deck geometries that uses a minimum reinforcement grid without explicit moment calculation.
What is the HL-93 live load used for bridge deck design in the USA?+
The AASHTO HL-93 (Highway Live Load — 1993) is the standard vehicular live load for all US highway bridge design per AASHTO LRFD. It consists of the larger of:
- Design truck: Three-axle truck (8-kip front axle + two 32-kip rear axles) combined with a uniform lane load of 0.64 kip/ft
- Design tandem: Two 25-kip axles spaced 4 ft apart + 0.64 kip/ft uniform lane load
For bridge deck slab design using AASHTO Table A4-1, moments are pre-calculated for both truck and tandem loadings with the governing live load moments tabulated by girder spacing. The multiple presence factor of 1.20 is applied for one lane loaded, per AASHTO S3.6.1.1.2. HL-93 replaced the previous AASHTO H and HS design trucks in 1993 and is used on all new US highway bridge projects.
What is a bridge deck wearing surface and is it included in the concrete volume?+
A bridge deck wearing surface is a sacrificial or protective layer placed on top of the structural concrete deck — it takes the direct wheel wear and protects the structural deck from deicing chemicals. In US bridge design, the wearing surface is classified as a Dead Load — DW (future wearing surface) in AASHTO LRFD load combinations. Common US wearing surfaces:
- HMA (Hot Mix Asphalt) overlay: 1.5–3 inches — most common US highway bridge wearing surface; weight = 25 psf/inch
- Latex Modified Concrete (LMC): 1.5–2 inches — polymer-modified overlay with improved durability
- Low-Slump Dense Concrete (LSDC): 1.5–2.5 inches — very low w/cm overlay for deicing zones
- Bare deck (no overlay): Used on some prestressed concrete bridges with HPC decks designed for direct traffic
The wearing surface is calculated and ordered separately from structural deck concrete. HMA wearing surfaces are typically specified under the roadway paving contract, not the bridge concrete contract.
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Bridge Deck Design Resources — USA
Official design standards, FHWA manuals, and technical resources for US concrete bridge deck projects.
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FHWA — Bridge Deck Design & Construction
Federal Resource
The Federal Highway Administration provides comprehensive technical resources for concrete bridge deck design, construction, inspection, and rehabilitation — including the Bridge Inspector’s Reference Manual, HPC bridge deck guidance, and state-by-state bridge program information through the National Bridge Inventory (NBI).
AASHTO — LRFD Bridge Design Specs
Design Standard
The AASHTO LRFD Bridge Design Specifications 9th Edition is the primary US standard for bridge deck design, concrete material requirements, reinforcement details, live load specifications (HL-93), and durability provisions — used by all 50 US state DOTs and FHWA on federally funded bridge projects.
ACI 318-19 — Concrete Building Code
ACI Standard
ACI 318-19 provides supplementary concrete material, reinforcement, and durability requirements referenced alongside AASHTO LRFD for US bridge deck concrete — including cover requirements, concrete mix design, curing provisions, and inspection and testing standards for cast-in-place reinforced concrete bridge deck construction.